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PRC EXAM 2022 with complete solution, Exam (elaborations)

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PRC EXAM 2022 with complete solution, Exam (elaborations) c - 1). Which of the following is an important characteristic of chemical grade chromite? A). High SiO2 C). Low SiO2 E). Low Cr2O3 B). Low C ... r : Fe ratio D). Low Al2O3 a - 2). In a gyratory crusher, what do you call the moving or gyrating component? A). Cone Head or mantle C). Main Shaft E). Frame B). Concaves D). Spindle D - 3). The product of chemical grade chromite and is the base material in the manufacture of other value added chrome based industrial product. A). Nitric Acid C). Sulfuric Acid E). Cyanic Acid B). Hydrochloric Acid D). Chromic Acid a - 4). Gold is widely used in which of the following industries? A). Electronics/Microchips Industry C). Furniture Industry E). All of the above B). Rattan Industry D). None of the above d - 5). A large mining community has a total population of 35,000 including mining emloyees, dependents. and other residents. If the communal rate is 40 liters per capita per day, What is the daily water demand of the mining community? A). 1.1 MM. liters C). 1.3 MM. liters E). 1.5 MM. liters B). 1.2 MM. liters D). 1.4 MM. liters b - 6). The process of precipitating the mercury to free the gold then later condensing the same to recover the mercury for posible re use. A). Precipitating C). Amalgamation E). Evaporation B). Retorting D). Cyanidation c - 7). How much lead is available in 100 MT of ore containing 25% galena, 2% cinnabar, 6% sphalerite and 3 % moisture. A). 200 DMT C). 210 DMT E). 220 DMT B). 205 DMT D). 215 DMT b - 8). Which of the following geologic formations refer to sedimentary rock masses that are bended or folded downwards? A). Anticline C). Folds E). Joints B). Syncline D). Faults a - 9). Which of the following does not belong to the group? A). Malachite C). Chalcopyrite E). Enargite B). Luzonite D). Bornite a - 10). Which of the following physical properties of rocks where they break along approximately parallel surfaces? A). Foliation C). Striation E). None of the above B). Bedding D). Fragmentation c - 11). Which of the following crushing equipment is fitted with a a cone head and mantle? A). Cone Crusher C). Gyratory Crusher E). Ball Mill B). Jaw Crusher D). Hydrocone d - 12). Which of the following is an economic mineral of iron? A). Hematite C). Magnetite E). None of these B). Pyrite D). All of thesea - 13). In the production of Chemical grade chromite concentrate, which of the following must be kept as low as possible? A). SiO2 C). Al2O3 E). FeS2 B). Cr:Fe ratio D). Cr2O3 b - 14). Economic mineral of silica. A). Pyrite C). Clay E). Bornite B). Quartz D). Sulfur b - 15). In a conventional belt conveyor arrang [Show More]

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